Originally Posted by Plaintoast
i wouldn't really consider that proof would you?
to me it sounded like the lower end was already bad. i think the op was referring to the top end rebuild causing the lower end to have problems.
or maybe i just misunderstood your post.
No, not a cause; but rebuilding only the top end made a bad situation way worse. Now there was no ignoring the total situation it all had to be fixed or scrapped.